The base station battery is from the current use, there is a problem that the battery capacity is too fast, the service life is short, and the battery capacity is only 30% ~ 40% of the battery, and some is only 10% ~ 20%, and most base stations battery operations have been operated in 1 to 4 years, with only about 50% of their nominal capacity, far from its design life, compared with the exchange of exchanges, and its service life is also Greatly reduced. This paper analyzes the damage causes of the battery during the operation of the base station, and proposes a method of extending the service life of the base station battery.
Wuxi Huizhong is a company specializing in the production of OPZS tube-type batteries. The OPZS model is complete, the price is low, the quality is good, the after-sales service is timely, and the delivery is timely.
First, the definition of battery life
The service life of the battery is generally referring to the use period of the floating state. For batteries operating in non-floating state, their life is measured from two dimensions of circulation discharge and discharge depth, as shown in Table 1. So don’t simply use how many years can use to measure the life of the battery.
For the number of cyclic discharges of the battery, it must be sufficiently electrical energy after the battery is discharged, and the power charging time is required for at least 24 hours (according to YD / T799-2002). For the insufficient charging, the number of cyclic discharge is difficult to determine, and it is definitely lower than the data described in Table 1.
The impact of discharge depth on battery life is also very large, the deeper the battery discharge depth, the less the number of cycles, as shown in Table 1, so the depth discharge should be avoided.
Wuxi Huizhong Weiye Electric Co., Ltd: Tel: 0510-81813146 Website: www.batt168.com Email: Batt123@qq.com
Second, the factors of the end of battery life
For valve-controlled sealed lead-acid storage, there are four failure modes: positive electrode plate corrosion, loss of water, thermal out of control, sulfate. Among them, the positive plate grid corrosion due to the improvement of the alloy process technology, the corrosion speed is very slow, generally 10 to 15 years.
There is more ways to lose water: the throttle design is unreasonable, frequently open; the power supply is frequently charged; the ambient temperature is too high. Among them, high temperatures are * main factors, and high temperatures will accelerate the battery’s lossless speed, resulting in a decrease in battery capacity. Based on 25 ¡ã C, when the battery operates rise 10 ¡ã C, the life is reduced by 50%, as shown in Figure 1.
Thermal out of control refers to the formation of a positive feedback between the heat generated during the charging process, the temperature and chemical reaction forms a positive feedback, and out of control. The thermal out of control is devastated to the battery, causing the battery case to deform, and severely causes the battery explosion. The reason for thermal out of control is that the ambient temperature of the machine room exceeds 45 ¡ã C, and the floating charge voltage is too high at high temperatures (without temperature compensation function), the charging current exceeds the design value (more than 2.5C10).
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